Draft-evener for gang-plows.



N0. 656,565. Patented Aug. 21, 1900. R. c. mconmcx.

DRAFT EVENEB FOR GANG FLOWS.

(Application filed Jan. 24. 1900.) (No Model.) 2 shee'ts-sheet No.656,565. Patented -Aug. 2|, I900. R. C. McCORMlCK.

DRAFT EVENER FUR GANG FLOWS.

(Application filed Jan. 24, 1900.) 7 (No Model.) '2 Sheets$heet 2.

dggnedaeax Ina/6 W" THE mmms PETCR$ co, vuorouma. WASHINGTON. o. c.

UNITED STATES PATENT OFFICE.

RICHARD o. MCCORMICK, oro aAoEvILrE, MINNESOTA.

DRAFT-EVEN ER FOR GANG-PLOWS.

SPECIFICATION forming part of Letters Patent No. 656,565, dated August21, 1900.

Application filed January 24, 1900. Serial No. 2,653. (No model.)

To all whom it may concern.-

Be it known that I, RICHARD O. MCCOR- MICK, a citizen of the UnitedStates, residing at Graceville, in the county of Bigstone and State ofMinnesota, have invented certain new and useful Improvements in GangdlowDraft-Eveners, of which the following is a specification.

My invention is a draft-equalizer and is intended to be used by four orfive horses.

In the accompanying drawings, Figure 1 is a top plan view of myinvention. Fig. 2 is a front edge view of the equalizing-beam, theequalizing doubletree and singletrees, the front part of the equalizerbeing cut away on the line X X of Fig. 1. Fig. 3 is a top plan view ofmy equalizer, partly in section and partly in perspective. Fig. 4 is adetail view showing a part of the under plate of the equalizer-beam anda view of the equalizer-doubletree, the levers 9, strips 11, cross-piece12, and part of the rod 13,.the upper piece 7 of the doubletree beingremoved. Fig. 5 is a detail view showing the lead-rod and spiral springin perspective and the tube in section.

My invention is described as follows:

The equalizer-beam 1 consists of a beam of wood 2 or other material,having in its free end three perforations, to either of which may besecured a singletree 2, and near its other end three other perforations2". Secured to the upper and lower faces of said beam are two plates 3and 4. (See Fig. 2.) Near the left-hand ends of these plates are pivotedtwo strips 5 and 6 of sheet metal. Between the rear ends of these twostrips of sheet metal may be pivotally bolted the forward end of theplow-beam 6. Between the extreme lefthand ends of these plates 3 and 4is bolted a doubletree,consisting of an upper bowed strip 7 and a lowerbowed strip 8, leaving between said two strips a considerable space, andbetween the two ends of these strips is pivoted a lever 9, and to thefree ends of each of these levers is secured by a chain or otherwise asingletree 10, and to each of the other ends of said levers 9 is pivoteda strip 11, and between the front ends of these strips 11 is pivoted across-pieoe12, and passing through a perforation in said cross-strip 12is :the rear end of a rod 13. Said rod 13 passes into a pipe 14, (seeFig. 5,) and on the forward end of said rod is a washer 15, and in frontof the washer and on the rod 13 works a nut 16, and in the rear end'ofsaid pipe 14 is secured a short piece of pipe 17.

Working between the washer 15 and short piece of pipe 17 is a spiralspring 18. The pipe 14 has a forward extension, which I call lips 19,and between these lips 19 is pivoted a doubletree 20, and to each endofthis doubletree is secured by a chain or otherwise a singletree 21, andto the upper face of the upper lip 19 are secured two breast-chains 22.

The operation of my equalizer is as follows: The plow-beam 6 is boltedbetween the strips 5, and the front end of these strips. 5 may bepivoted to the equalizing-beamthrough either one of the perforations 2".This is for the purpose of adjusting the equalization of the draft, asall the team is never of the same strength. One animal being strongerthan the other the singletree 2 may also be adjusted to either one ofthe perforations in the left-hand end of said beam; One horse isharnessed to the singletree 2, one horse to each of the singletrees 10,and one horse to each of the singletrees 21, making five horses in all.

I. may work four horses by attaching the front end of the plow-beam 6 tothe middle perforation of the doubletree. I adjust the equalizer to therelative strength of the animals but this equalizer is primarilydesignedfor five horses and I have used itto great advantage in breaking roughgrounds.

The levers 9' are permitted to work back and forth between the upper andlower parts of the doubletree, and the rod 13 is also permitted to workback and forth in the tube 14 by means of the spiral spring 18. Thisyielding of these parts prevents certain jars which injure the shouldersof the horses and fatigue them and also relieves the operator fromsudden jars, which shock and fatigue him, and thus a days labor could beperformed both by plowman and team with less fatigue than when usingsingleand double trees that will not yield.

, Having described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination of the perforated beam 2; perforated plates 3 and 4,secured to the upper and lower faces of said beam, strips 5 and 6,pivoted near the right-hand ends of said strips; the doubletree,consisting of the upper and lower bowed pieces 7 and 8, pivoted betweenthe right-hand ends of said strips 3 and 4, levers 9, one pivotedbetween each end of said doubletree, strips 11, one socured to each ofthe inner ends of said levers; perforated cross-piece 12, pivotedbetween the front ends of said strips 11; tube 14, provided with a shorttube 17, and perforated lips 19; rod 13, one end working in theperforation of strip 12 and the other in the tube 14; washer 15, andnut' 16, working on the front end of said tube; spiral spring 18,working around rod 13 and in tube 14, and between washer 15 and shorttube 17; doubletree 20, pivoted between lips 19, the beam 1, levers 9and doubletree 20, adapted to carry singletrees, substantially as shownand described and for the purposes set forth.

2. The combination of the perforated beam 2; perforated plates 3 and 4,secured to the upper and lower faces of said beam, strips 5 and 6,pivoted near the right-hand ends of said strips; the doubletree,consisting of the upper and lower plates 7 and 8, pivoted between theright-hand ends of said strips 3 and 4; levers 9, one pivoted' betweeneach end of said doubletree, singletrees 10, one secured to the outerends of said levers 9; strips 11, one secured to each of the inner endsof said levers; perforated cross-piece l2, pivoted between the frontends of said strips 11; tube 14, provided with a short tube 17 andperforated lips 19; rod 13, one end working in the perforation of strip12 and the other in the tube 14; washer 15 and nut 16, working on thefront end of said tube; spiral spring 18, working around rod 13 and intube 14, and between washer 15 and short tube 17; doubletree 20, pivotedbetween lips 19, singletrees 21, one secured to each end of saiddoubletree 20 and breast-chains 22, secured to the upper faces of one ofthe lips 19, substantially as shown and described and for the purposesset forth.

In testimony whereof I affix my signature in presence of two Witnesses.

RICHARD c. MoooRMIoK.

WVitnesses:

IGNATZ FROSINA, EDWARD O. BAIRD.

